merging with svn

git-svn-id: https://brain-invoice.googlecode.com/svn/trunk@13 e6ef879c-6efb-f92a-4ca0-37fcd3c99b0e
Merge https://github.com/yudhik/brain-invoice into HEAD

git-svn-id: https://brain-invoice.googlecode.com/svn/trunk@14 e6ef879c-6efb-f92a-4ca0-37fcd3c99b0e
change database structure

git-svn-id: https://brain-invoice.googlecode.com/svn/trunk@15 e6ef879c-6efb-f92a-4ca0-37fcd3c99b0e
change database structure

git-svn-id: https://brain-invoice.googlecode.com/svn/trunk@16 e6ef879c-6efb-f92a-4ca0-37fcd3c99b0e